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If dirfsp is the share root, we end up with a "/." at the end of
subdir_path. subdir_of() does not cover that case. fsp_fullbasepath()
takes care of that case and also avoids a talloc.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We should show all special files as NORMAL|REPARSE_POINT, except
symlinks for SMB1 Posix Extensions. IFREG and IFDIR are handled via
our xattr mechanisms.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
If we get that error message, we want to look at the reparse point as
such. This does not affect normal files, but soon we will need it in
our tests.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This reverts commit bd30c9c128.
While this does indeed slightly simplify code, it simplifies too much: Soon we
will need filename_convert_dirfsp_nosymlink raw without looking at
UCF_LCOMP_LNK_OK. So in hindsight this went too far.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
OPEN_REPARSE_POINT will trigger symlinks not being followed but
returned, even if we have "follow symlinks = yes". Prepare for setting
UCF_LCOMP_LNK_OK for this case in a central place.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This handles the case where an event script is disabled by unlinking,
while an event is being run, after the script list has been created.
Without this change the script will fail. With this change the script
will be marked as DISABLED. See the comment added by this commit for
more details.
Add a testcase to simulate the race, using an event script to disable
subsequent ones.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15755
Signed-off-by: Martin Schwenke <mschwenke@ddn.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Thu Nov 21 01:42:09 UTC 2024 on atb-devel-224
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue Nov 19 19:24:16 UTC 2024 on atb-devel-224
Also add the file type. Not really relevant in create, IMHO it looks
nicer in the code.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
fdos_mode(fsp) unconditionally dereferences fsp, so we can get rid of
checking for fsp!=NULL.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15754
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Mon Nov 18 12:43:28 UTC 2024 on atb-devel-224
I think this was missing from 2065f00656
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Sat Nov 16 13:26:05 UTC 2024 on atb-devel-224
This is a regression of a39cb60 examples:winexe: Fully initialize EXPLICIT_ACCESS
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15752
Signed-off-by: Pavel Filipenský <pfilipensky@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Pavel Filipensky <pfilipensky@samba.org>
Autobuild-Date(master): Wed Nov 13 15:47:40 UTC 2024 on atb-devel-224
Better look at the final code, not at the patch. The idea is to call
filename_convert_dirfsp() from fd_openat() and just have one place to
follow symlinks.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue Nov 12 19:21:11 UTC 2024 on atb-devel-224
Looks more complex, but we don't have to go through all of
fd_openat()/non_widelink_open() for opening streams. SMB_VFS_OPENAT
knows how to deal with this.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Soon we will call filename_convert_dirfsp() on these, which can't deal
with paths that are invalid by containing . and .. as path components.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Looks more complex, but this avoids calling openat_pathref_fsp, which
eventually calls into non_widelink_open(). We need to open the pretty paranoid
SMB_ASSERT in openat_pathref_fsp_lcomp() a little bit.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll call filename_convert_dirfsp() from a lot more places soon.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Get a pathref handle on the file system root. This will serve as
"basedir" for filename_convert_dirfsp_rel() to turn an absolute path
into one relative to the handle created here.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Soon we'll have a caller that needs the last component as a relative
file name. Make sure it does not have to call get_lcomp or so.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Unused so far, but soon we'll call this routine with a basedir that's
somewhere below the share root.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This avoids a full path traversal if /proc/self/fd is available.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Use the /proc/self/fd trick to make get_real_filename_fullscan_at look
a bit nicer and faster in strace. Direct SMB_VFS_OPENAT also is
cheaper in user space, we don't need the full fd_openat and
non_widelink_open magic here.
Also avoid opening ".", which can fail where a full path open would
succeed: If the directory in question does not give "x" perms to the
user, we get a handle on the dir as such but can't cd into it.
I haven't seen real-world cases of this, but one of our tests creates
such a scenario. I have further refactoring in my local tree that make
this patch necessary.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
So far fd_openat needed to be called with cwd_fsp and "." if you
wanted to open the share root, this enables using the absolute share
path. The next patch will remove sending the "." with cwd_fsp as a
simplification. Enable that with this little change.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Make it clear that non_widelink_open being called for absolute paths
is not done during regular operations, i.e. when we have passed our
pathnames through filename_convert_dirfsp and we work on a real
dirfsp.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We can't deal with snapdir paths in non_widelink_open fully with
snapdirseverywhere active: There is no way for
shadow_copy2_parent_pathname() to work when a snapshot directory is
below the directory that we want to calculate the parent for. What is
the parent directory supposed to point at? I don't know.
For me the only way out is to accept that we should ignore what
happens behind shadow_copy2's path manipulation in core
smbd. This *might* open symlink races, but the whole point of
snapshots is that they are r/o copies of the real active file system
and as such they should be immune to those races.
Found while trying to refactor code around fd_openat()
P.S: This code will go away pretty soon
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
If we do the S_ISLNK check in the lower level, the if-condition is
simpler and we get the close_file_free() call for free.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
